Assignee
DOWA THERMOTECH CO LTD
JP·19 granted patents·5 pending applications·18 citations·filing 2002–2023
Top patents by PatentIndex Score
24 records- 0185US10870909B2Heat treatment facilityDOWA THERMOTECH CO LTD·Filed 2018·Granted Dec 22, 2020·2 cites·5 claims
- 0285US9988704B2Manufacturing method of nitrided steel memberDOWA THERMOTECH CO LTD·Filed 2017·Granted Jun 5, 2018·1 cites·1 claims
- 0378US10385439B2Nitriding process method of steel memberDOWA THERMOTECH CO LTD·Filed 2014·Granted Aug 20, 2019·1 cites·5 claims
- 0477US10731243B2Intermediate layer formed between base material and DLC layer and film-forming method thereofDOWA THERMOTECH CO LTD·Filed 2016·Granted Aug 4, 2020·1 cites·5 claims
- 0573US11613463B2Vanadium nitride film, and member coated with vanadium nitride film and method for manufacturing the sameDOWA THERMOTECH CO LTD·Filed 2021·Granted Mar 28, 2023·0 cites·4 claims
- 0672US9783879B2Nitrided steel member and manufacturing method thereofDOWA THERMOTECH CO LTD·Filed 2013·Granted Oct 10, 2017·1 cites·4 claims
- 0769US7276204B2Carburization treatment method and carburization treatment apparatusDOWA THERMOTECH CO LTD·Filed 2002·Granted Oct 2, 2007·12 cites·4 claims
- 0867US11014814B2Vanadium nitride film, and member coated with vanadium nitride film and method for manufacturing the sameDOWA THERMOTECH CO LTD·Filed 2017·Granted May 25, 2021·0 cites·4 claims
- 0964US2026042671A1Carbon nanotube collection apparatus, carbon nanotube manufacturing apparatus, and carbon nanotube collection methodDOWA THERMOTECH CO LTD·Filed 2023·Application pending·0 cites
- 1060US12540421B2Carbon nanotube collection apparatus, carbon nanotube manufacturing apparatus, and carbon nanotube collection methodDOWA THERMOTECH CO LTD·Filed 2022·Granted Feb 3, 2026·0 cites·19 claims
- 1160US12459823B2Vanadium silicon carbide film, vanadium silicon carbide film coated member, and manufacturing method of vanadium silicon carbide film coated memberDOWA THERMOTECH CO LTD·Filed 2020·Granted Nov 4, 2025·0 cites·9 claims
- 1260US2025101565A1Vacuum carburizing furnace and vacuum carburizing treatment methodDOWA THERMOTECH CO LTD·Filed 2023·Application pending·0 cites
- 1359US11072857B2Vanadium silicon nitride film, member coated with vanadium silicon nitride film and method for manufacturing the sameDOWA THERMOTECH CO LTD·Filed 2017·Granted Jul 27, 2021·0 cites·8 claims
- 1459US10145007B2DLC film film-forming methodDOWA THERMOTECH CO LTD·Filed 2014·Granted Dec 4, 2018·0 cites·6 claims
- 1559US2008073002A1Carburization treatment method and carburization treatment apparatusDOWA THERMOTECH CO LTD·Filed 2007·Application pending·0 cites
- 1658US2026035247A1Carbon nanotube collection apparatus, carbon nanotube manufacturing apparatus, and carbon nanotube collection methodDOWA THERMOTECH CO LTD·Filed 2023·Application pending·0 cites
- 1756US10006116B2Forming method of intermediate layer formed between base material and DLC film, DLC film forming method, and intermediate layer formed between base material and DLC filmDOWA THERMOTECH CO LTD·Filed 2014·Granted Jun 26, 2018·0 cites·8 claims
- 1855US11091367B2Vanadium silicon carbonitride film, vanadium silicon carbonitride film coated member, and method for manufacturing the sameDOWA THERMOTECH CO LTD·Filed 2018·Granted Aug 17, 2021·0 cites·9 claims
- 1948US10883764B2Door structure of heat treatment furnaceDOWA THERMOTECH CO LTD·Filed 2017·Granted Jan 5, 2021·0 cites·5 claims
- 2045US12077869B2Heat treatment apparatusDOWA THERMOTECH CO LTD·Filed 2019·Granted Sep 3, 2024·0 cites·6 claims
- 2145US11359271B2Nitriding treatment method of steel memberDOWA THERMOTECH CO LTD·Filed 2016·Granted Jun 14, 2022·0 cites·5 claims
- 2240US11242592B2Continuous nitriding treatment furnace and continuous nitriding treatment methodDOWA THERMOTECH CO LTD·Filed 2017·Granted Feb 8, 2022·0 cites·14 claims
- 2337US10499460B2Heater unit and carburizing furnaceDOWA THERMOTECH CO LTD·Filed 2015·Granted Dec 3, 2019·0 cites·8 claims
- 2430US2015275346A1Heat treatment apparatusDOWA THERMOTECH CO LTD·Filed 2014·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →